From what i understand you cant connect to wifi after a JC4 upgrade with odin?
Did you do a wipe before the upgrade?
if not, restore your latest backup (hoping you made 1 before upgrading..) and wipe before using odin. Im on JC4 and have no wifi issues.
In any case, if your not getting an IP address, the issue can always be with the DHCP service on the router =)